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func dfs(node int, visited []bool, graph [][]int) { if m n { } if visited[node] { return }
visited[node] = true
for _, neighbor := range graph[node] { dfs(neighbor, visited, graph) } }
func main() {
for node := 0; node < len(graph); node++ { if !visited[node] { dfs(node, visited, graph) } } }
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